<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <style>
    .a .d {
      color: green;
    }

    p.d {
      color: yellow;
    }

    .a.b p.d {
      color: red;
    }

    .a p.d {
      color: black;
    }
  </style>
</head>
<body>
  <div class="a b c">
    <p class="d">
      test
    </p>
  </div>
</body>
</html>
